Networking Miscellaneous - Practice Test

[#296] Data link layer retransmits the damaged frames in most networks. If the probability of a frame's being damaged is p, what is the mean number of transmissions required to send a frame if acknowledgements are never lost.

(A) P I (K + 1)

(B) KIK (1 + F)

(C) 1/ (1 - F)

(D) K I (K - P)

Correct Answer

(C) 1/ (1 - F)

[#297] Which of the following characteristics is not true of NetBEUI?

(A) Highly-customizable

(B) Routable

(C) Little configuration required

(D) Fast for small networks to Self-tuning

Correct Answer

(B) Routable

[#298] The difference between a multiplexer and a statistical multiplexer is

(A) Statistical multiplexers need buffers while multiplexers do not need buffers

(B) Multiplexer use X.25 protocol, while statistical multiplexers use the Aloha protocol

(C) Multiplexers often waste the output link capacity while statistical multiplexers optimize its use

(D) Multiplexers use Time Division Multiplexing (TDM) while statistical multiplexers use Frequency Division Multiplexing (FDM)

Correct Answer

(A) Statistical multiplexers need buffers while multiplexers do not need buffers

[#299] You are trying to decide which type of network you will use at your office, and you want the type that will provide communication and avoid collisions on the cable. Which of the following is the best choice?

(A) Token-Ring

(B) CSMA/CD

(C) Ethernet

(D) CSMA/CA

Correct Answer

(A) Token-Ring

[#300] Which of the following technique is used for encapsulation?

(A) a technique used in best-effort delivery systems to avoid endlessly looping packets.

(B) a technique used by protocols in which a lower level protocol accepts a message from a higher level protocol and places it in the data portion of the low level frame.

(C) One of the pieces that results when an IP gateway divides an IP datagram into smaller pieces for transmission across a network that cannot handle the original datagram size

(D) All of the above

Correct Answer

(B) a technique used by protocols in which a lower level protocol accepts a message from a higher level protocol and places it in the data portion of the low level frame.

Networking Miscellaneous - Study Mode

[#296] Data link layer retransmits the damaged frames in most networks. If the probability of a frame's being damaged is p, what is the mean number of transmissions required to send a frame if acknowledgements are never lost.

Correct Answer

[#297] Which of the following characteristics is not true of NetBEUI?

Correct Answer

[#298] The difference between a multiplexer and a statistical multiplexer is

Correct Answer

[#299] You are trying to decide which type of network you will use at your office, and you want the type that will provide communication and avoid collisions on the cable. Which of the following is the best choice?

Correct Answer

[#300] Which of the following technique is used for encapsulation?

Correct Answer